ELPA Wireless Chime Cheek Tone Receiver EWS-P51 1 piece

Catalog number: EWS-P51 Features: ●Up to eight transmitters can be registered and used with one receiver. ●There are 20 types of alarm sounds. ●Different sounds can be set for each transmitter. Uses: ●For expanding or replacing the wireless chime series. Specifications: ●Power supply (V): 3 AA batteries (sold separately) or DC4.5V center positive compatible plug: outer diameter Φ5.5mm inner diameter Φ2.1mm (when using an AC adapter sold separately) ●Battery life: Approximately 1 year (used 10 times a day, volume 4, ping pong high tone) *When using alkaline batteries *Battery life may be shortened depending on the battery performance and usage conditions. ●Volume (cm): Approx. 88dB/50●Radio wave reach (m): Line of sight approx. 120●Frequency: 313.625MHz (specific low power device)●ID code: Approx. 250,000 types●Operating temperature range: 0℃ to 40℃●External dimensions (approx.): Width 142 x Height 80 x Depth 29 (mm) (maximum value)●Weight: Approx. 138g (excluding batteries) Set contents/accessories:●2 mounting screws Caution:●When used in buildings using reinforced concrete or steel frames, on different floors, or in places separated by walls, radio waves may not reach the receiver easily. ●This product cannot be used alone.